Flexible skin or fabric



, cam phor.

lilnrrnn States JOIIN II. STEVENS, OF NEWARK, NEIV JERSEY, ASSIGNOR TO THE CELLU- "LOID COMPANY, OF NEWV YORK, N. Y. A CORPORATION OF NEW JERSEY.

FLEXIBLE SKEN OR FABRHC.

SPEGIFIGATION forming part of Letters Patent NO. 622,727, dated April 11, 1899.

Application filed February 9, 1899. Serial No. 705,061. (No s ecimens.)

To (ZZZ whom it may concern:

Be it known that I, JOHN H, STEVENS, of the city of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Flexible Skins or Fabrics, of which the following is a specification.

In my United States Patent No. 615,319, of December 6, 1898, I have described the use of naphthol'as an important ingredient in flexible pyroxylin compositions containing The present invention is based on mysucoessful use of naphthol in flexible compounds of pyroxylin whiclf contain no camphor. I find that by dissolving pyllQXYliH in a mixture QQHlSli11g f.. a suitable oil, a liquid solvent of pyroxylin, and naphthol I get .a product which can be combined vvith color- 'ing-matter and then spread upon leather,

,cloth o gthe1; fabrio to produce animproved artfcle which' takes the place of the best-[hr bination with the other ingredients.

ished leather goods. It is essential that the solvent either consist of or contain a liquid of comparatively slow volatility and immiscible with water. This liquid must either be a solvent of pyroxylin orform a solvent in com- There are many liquids which answer this description. For instance, I have successfully used acetate of amyl, 'benzoic ether, propionic ether, capronic ether, formateof amyl, and

fusel-oil.

My coatings remain flexible .for a much longer time than the same compounds with the naphthol left out. By preference I use castor-oil, beta-naphthol, andamyl acetate, either alone or mixed with any of the alcohols. A good formula for coating a solution for cloth or leather is as follows: soluble pyroxylin, one hundred parts; amyl acetate, 40 three hundred parts; wood-spirit, three hundred parts; caster-oil, one hundred and fifty parts; beta-naphthol, two to three parts. The proportion of wood-spiritcan be varied according to the solubility of the particular pyroxylin employed, so as to makea solution suitable for spreading and, other things being equal, the proportion of oil be changed to suit the flexibility desired.

Suitable pigments for coloring can be ground in or mixed with the composition in the manner usually employed for coloring, enameling, or waterproofing mixtures.

The finished fabric is susceptible of embossing or burnishing and will remain pliable 5 5 for a long time without decomposition or offensive odor.

I disclaim in this application a pyroxylin compound which contains camphor.

Having thus fully described myinvention, what I claim, and desire to secure by Letters Patent, is-- V v 1. A fabric waterproofed by a pyroxylin compound which contains pyroxylin, oil, naphthol, and a volatile liquid inenstruum insoluble in water, substantially as described.

2. A fabric waterproofed by a pyroxylin compound which contains pyroxylin, oil, naphthol, and amyl acetate, substantially as described. I

3. A fabric waterproofed by a pyroxylin compound which contains pyroxylin, casteroil, beta-naphthol, and amyl acetate, substantially as described.

JOHN II. STEVENS. lVitnesses:

WALTER P. LINDSLEY, M. R. EIsnLn. 

